Dpreview has a camera feature search which is how I came across the G1XIII. There isn’t anything else quite like it, and a good used one is well worth it. Even over most of the other premium compacts it has a huge advantage for backpacking by being weather sealed.
Is there something else you wanted from it, or just looking for new?
I don’t think anyone has done an update, no. Honestly, the feature I never expected to want until I got a Ricoh GRIIIx a few months earlier is highlight weighted exposure meeting. Since it’s not an SLR however you can obviously see the histo anyway.
It has a wee filter ring already for the lens cap to clip into. Apparently some folks just stick a UV filter on and do away with the lens cap.